Guide-adjusting mechanism for sewing-machines.



J, M. MERHOW.

GUIDE ADJUSTING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED MAY l7, l9l6.

Patented Dec. 5

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TTNTTEU STATES PATENT UFFTOE.

JOSEPH M. MERROW, 0F HARTFORD, CONNECTICUT, ASSIGNOR TO THE MEBROW MACHINE COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF CON- NECTICUT.

GUIDE-ADJUSTING MECHANISM FOR SEWING-MACHINES.

Original application filed November 2, 1914, Serial No. 869,936.

Specification of Letters Patent.

1916. Serial No. 98,191.

To all whom it may concern:

Be it known that I, JosEPH M. Mmmow, a citizen of the United States, residing in the city of Hartford, county of Hartford, State of Connecticut, have invented certain new and useful Improvements in Guide- Adjusting Mechanism for Sewing-Machines and I do declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the characters of reference marked thereon.

This is a division of my application for Letters Patent for an improvement in crochet machines filed Nov. 2, 1914, Serial No. 869,936.

The present invention relates to guides, and particularly to guide adjusting mechanism for sewing machines. In finishing an edge of material as by overstitching, variation in the distance between the edge of the material and the line of needle Penetrations, where the edging is attached, produces different effects which are quite desirable in combination. The production of these combined efi'ects requires more or less frequent adjustment of an edge guide with respect to a predetermined position thereof and the amount of edge guide adjustment from such position is preferably variable to thereby efi'ect different arrangements of stitching suitable respectively for materials of various character.

The object of this invention is the provision of mechanism constructed of few parts, simply associated and adapted for peculiar adjustment to efi'ect the changes mentioned, in a manner fully set forth in the following detailed description and the accompanying drawings, in which latter,

Figure 1, is a front side view of part of a sewing machine showing one position of the mechanism embodying my invention,

similar parts throughout the several views.

Referring particularly to the drawings, those parts of a crochet machine which are well known and shown in connection with my improved guide mechanism, comprise the machine frame 3, work plate 4, chaining finger 5, presser foot 6, and reciprocatory needle Within a guideway 8, in the machine frame, there is fitted for reciprocatory movement a slide 9, to one end of which is secured by screw 10, the edge guide 11. The latter is preferably of angular form having a shank 12, and a guide finger 13. The shank is provided with an elongated slot 14, to receive screw 10, and the guide finger 13, extends parallel with the line of stitching and has a laterally extended spur 15, to overlie the edge or edges of .material engaging the guide.

Means for shifting the slide, together with the guide secured thereto include a lever 16, and link 17. The lever 16, provided with a knob 16, is manually operable about a fulcrum stud 18, tapped into the machine frame. Preferably the amplitude of move ment of this lever is, in one or both directions, adapted to be definitely indicated by some suitable means. As shown the lever is movable to the right or left a distance corresponding to the space between lugs 19, and 20, which are adapted to engage a positive stop, as the pin 21, secured to the machine frame. The link 17 secured at one end to slide 9, by a pivotal stud 22, is, at its other end, provided with a pivotal connection 23, adapted to be clamped to lever 16. Said pivotal connection comprises a sleeve 24, surrounding a stud 25, tapped into a nut 26, which is fitted. in an elongated countersunk slot 27, in lever 16. The sleeve 24, and nut 26, are adapted to be drawn into clamping relation with lever 16, by the stud 25, and, obviously the pivotal connection 23, thereby formed for link 17, and lever 16, may be adjusted along the slot 27, to vary the throw imparted to the edge guide for a given movement of lever 16, which is movable from the position in which it is shown in Fig. 1, to the position in which it is shown in Fig. 2, and vice versa. Its movement is always of the same amplitude but the amplitude of movement imparted thereby to the edge guide may be varied by ad justing the pivotal connection 23, in the manner set forth. Such Variation involves changing the amplitude of movement of the edge guide by an increase or decrease on one side only of a line pre'eTstablished in a manner which will appear.

'In producing a combination of stitching wherein two separated lines of needle penetrations are. alternately followed, the edge lever 16, adjustment of pivotal connection 23, will in no way produce a relative movement between lever 16, and slide 9, that is, slide'9, will always be moved to the same position when lever 16, is movedv to engage lug 19, with stop 21, and this position through edge guide 11, establishes for needle penetrations a line from which another line' for needle penetrations may be spaced a greater or less amount according to requirements. When lever 16, is moved from the position in which it is shown in Fig. 1, the

' slot 27, passes out of concentricity with stud 22, and therefore as lug 20, engages stoppin 21, the'slide 9, will have been moved a greater or less distance according to the point at which connection 23, is adjusted along slot 27 Upon manipulation of lever 16, engagement of lug 19' with pin 21 will precisely indicate to the operator that cer- V tain parts have been established in a definite relation, with slot 27 concentricto stud 22, as shown in Fig. 1, while engagement of lug 20 with pin 21, will indicate a different definite relation of said parts, as shown in Fig. 2. The edge guide 11, being rigidly secured to slide 9, is, upon the described movements of associated parts, correspondingly effected, although by virtue of the slot 14, before mentioned, said guide may be adjusted relatively to the slide to variously establish one side only of its range of move- I ment as effected by manipulation of lever 16.

- i To adjust the parts for use in connection with the production of stitching such as illustrated in Fig. 3, lever 16, is first shifted to the position in which it is shown in Fig.

,1; the guide 11, is then adjusted relatively to slide 9, to give between the fabric edge 28,'and line 29, of needle penetrations, the spacing indicated at 30; and finally lever 16,

is shifted to the position in which it isshown in Fig. 2, and the pivotal connection 23, is adjusted in slot 16, to give between the lines 29, and 31, of needle penetrations the spacing indicated at 32.

Having thus described my invention, what I claim is,

1. In a sewing machine, in combination,

a pair of elements comprising a movable -of the elements, a stud associated with the edge guide, a second stud associated with the lever, and a link connecting the studs, one of the latter being mounted for adjustment in an arc concentric to the axis of the other when the stop is engaged by the element with which it is effective.

2. In a sewing machine, in combination, a pair of elements comprising a movable edge guide and a lever, a stop for limiting the movement in opposite directions of the lever, a stud associated with the edge guide, a second stud associated with the lever, and a link connecting the studs, one of the studs being mounted for adjustment in an arc concentric to the axis of the other stud when the lever is in one of its stop engaging positions.

3. In a sewing machine, in combination, an edge guide movable from a predetermined position, a lever, a stud associated with the edge guide, a second stud associated with the lever, and a link connecting the studs, one of the latter being mounted for adjustment in an arc concentric to the axis of the other when the edge guide occupies its predetermined position.

4:. In a sewing machine, in combination, a movable edge guide, a stud carried by the edge guide, a lever, a second stud carried by the lever and adjustable relatively thereto in a path which in one position of the lever is concentric to the axis of the stud carried by the edge guide, and a link connecting the studs.

5. In a sewing machine, in combination, a movable edge guide, a stud carried by the edge guide, a lever having an arcuate slot and movable to locate the slot in concentricity to the stud carried by the edge guide, a stud adjustably secured in the slot, and a link connecting the studs.

6. In a sewing machine, in combination, a movable edge guide, a stud carried by the edge guide, a lever, a second stud adjustable in an arcuate slot in the lever, a link connecting the studs, and means for indicating a relation into which the edge guide and lever are movable wherein the stud associated with the edge guide and the edge guide, and a lever, a stud adjustable in anarcuate path on one of the elements, a second stud rigid with the other element, a link connecting the studs, and means for indicating a relation into which the edge guide and lever are movable wherein one stud is concentric with the arcuate path in which the other stud is adjustable.

'8. In a sewing machine, in combination,

an edge guide, a lever, stop means for defining a range of movement for the lever, a stud associated with the edge guide, a second stud associated with the lever, and a link connecting the studs, one of the studs being mounted for adjustment in an are which, when the lever is at one end of its range of movement, is concentric to the axis of the other stud.

9. In a sewing machine, in combination, a support, a slide carried by the support, an edge guide secured to the slide, a lever, a stud associated with the slide, a second stud associated with the lever, a link connecting the studs, and means for indicating a relation into which the parts are movable wherein an arcuate path in which one of the studs is adjustable is concentric to the axis of the other stud.

10. In a sewing machine, in combination, an edge guide movable to and from a predetermined position, an actuating element, and means associated with the edge guide and actuating element for transmitting motion therebetween, said means including an adjustable device whereby equal movements of the actuating element may for different adjustments respectively eflect unequal movements of the edge guide wholly in one direction from its predetermined position.

JOSEPH M. MERROW.

Witnesses F. W. SPELLMAN, F. E. ANDERSON.

lUopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

